Outre-Mur is a documentary edited by 4 communication students in Brussels. It illustrates the case of Belfast, in Northern Ireland, where the "Peace lines" are still dividing protestant and catholic communities. Since 1972, they have been living walled in, each in their own community. Even though the circumstances have evolved, the segregation is still going on. After our trip there, we have been wondering and questioning ourselves about this situation. To what degree has this wall influenced the xenophobic feeling among its inhabitants? We wanted to let young people expressed themselves.